Download or read book Prostaglandin Transport and Catabolism in the Choroid Plexus During Perinatal and Postnatal Development in Sheep written by Nancy Krunic and published by . This book was released on 1999 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: In sheep, the marked decrease in prostaglandin (PG)E2 levels in ventricular cerebrospinal fluid (CSF) after birth is believed to promote continuous breathing. Factors responsible flor this decrease are unknown. In adults, prostaglandins are cleared from CSF to plasma by carrier-mediated, probenecid-sensitive transport across the choroid plexus. Circulating prostaglandins are cleared from plasma. by a similar carrier in lungs and kidneys. Carrier-mediated transport is rate-limiting for catabolism via 15-hydroxyprostaglandin dehydrogenase (15-PGDH) at these sites. It is not known whether carrier-mediated transport and/or 15-PGDH-mediated catabolism operate in the choroid plexus during perinatal development, or if an increase in their activities contributes to the postnatal decrease in CSF PGE2. To address these questions, we examined in vitro 3H-PGE2 and 3H-PGF2Ã uptake and catabolism by the sheep choroid plexus using liquid scintillation spectrometry and thin-layer radiochromatography. 15-PGDH was localized by immunofluorescence and immunogold histochemistry. In the term fetus, PGE 2 and PGF2Ã were accumulated against a concentration-gradient in a saturable, probenecid-sensitive, time- and temperature-dependent manner. Uptake was similar in fetuses (preterm and term) and lambs (~5 and 15 d) and tended to be higher in adults. In the fetus, both prostaglandins were extensively catabolized by 15-PGDH. PGE2 catabolism did not change during the perinatal period, while PGF2, catabolism decreased soon after birth. Catabolism was probenecid-insensitive and, thus, functioned independently of uptake. In adults, catabolism was marginal and, accordingly, 15-PGDH was undetectable. In fetuses, 15-PGDH was localized near the CSF-facing membrane of epithelial cells. In lambs, 15-PGDH was localized, instead, in stromal fibroblasts. PGE2 catabolism did not change in association with the postnatal relocalization of 15-PGDH, whereas PGF2Ã catabolism decreased. This study confirms that, in the perinatal sheep as in the adult, prostaglandins can be cleared from CSF via carrier-mediated transport across the choroid plexus. Contrary to the adult, in the fetus, prostaglandins are completely catabolized in the choroid plexus. The postnatal fall in CSF PGE 2 cannot be attributed to increased clearance via either transport or catabolism in the choroid plexus. However, the concomitant activity of the prostaglandin carrier and 15-PGDH may help to maintain PGE2 low in neonates and, by extension, to sustain continuous breathing.
Download or read book Prostaglandin Transport and Catabolism in the Choroid Plexus During Perinatal and Postnatal Development in Sheep written by and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Prostaglandin Transport and Catabolism in the Choroid Plexus During Perinatal and Postnatal Development in Sheep microform written by Nancy Krunic and published by National Library of Canada = Bibliothèque nationale du Canada. This book was released on 1999 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2000 with total page 956 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Lung Development written by Claude Gaultier and published by Springer. This book was released on 2013-05-27 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt: Knowledge about the mechanisms of lung development has been growing rapidly, especially with regard to cellular and molecular aspects of growth and differentiation. This authoritative international volume reviews key aspects of lung development in health and disease by providing a comprehensive review of the complex series of cellular and molecular interactions required for lung development. It covers such topics as pulmonary hypoplasia, effects of malnutrition, and pulmaonary angiogenesis. An indispensable reference for all those involved in studying or treating lung disease in neonates and children, the book offers a unique view of the development of this essential organ.
Download or read book American Doctoral Dissertations written by and published by . This book was released on 1999 with total page 848 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Acute Perinatal Asphyxia in Term Infants written by Linda L. Wright and published by DIANE Publishing. This book was released on 1997-07 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reviews the current knowledge of the definition & diagnosis of acute perinatal asphyxia in term infants in order to develop operational & specific criteria to be tested in new studies. Summarized information currently available on this topic. Contents: scientific basis of brain injury in acute perinatal asphyxia; clinical assessment -- obstetrics; clinical assessment -- neonatal; interventions (conventional management; neuronal rescue & neuronal prohylaxis; glutamate antagonists, calcium channel blockers & Allopurinol); clinical studies of long-term outcome; clinical research. Charts & tables.
Download or read book Brain Edema XII written by T. Kuroiwa and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 636 pages. Available in PDF, EPUB and Kindle. Book excerpt: Brain edema is a simple phenomenon – an abnormal increase of brain tissue volume by the increase of brain tissue water content. However the etiology is not simple and relating to a wide variety of neurological disorders including ischemia, trauma, tumor, hemorrhage and hydrocephalus. It is still a major cause of death in the neurological/neurosurgical ward. This volume is an up-to-date report on progress in brain edema research, diagnosis and treatment, including papers presented at the 12th International Symposium on Brain Edema and Brain Tissue Injury in 2002. Major topics include molecular biology and blood-brain barrier disorders, ischemic and traumatic brain edema, imaging and diagnosis of brain edema, treatment and radiation effect. Various papers in the rapidly growing fields of neuroimaging and molecular medicine are also included.
Download or read book Essentials of Anesthesia for Infants and Neonates written by Mary Ellen McCann and published by Cambridge University Press. This book was released on 2018-02-22 with total page 465 pages. Available in PDF, EPUB and Kindle. Book excerpt: A practical, comprehensive guide to the special needs of infants and neonates undergoing anesthesia.
Download or read book Ehlers Danlos Syndrome A Multidisciplinary Approach written by J.W.G. Jacobs and published by IOS Press. This book was released on 2018-08-14 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt: Generalized hypermobility has been known since ancient times, and a clinical description of Ehlers-Danlos syndrome (EDS) is said to have first been recorded by Hippocrates in 400 BC. Hypermobility syndromes occur frequently, but the wide spectrum of possible symptoms, coupled with a relative lack of awareness and recognition, are the reason that they are frequently not recognized, or remain undiagnosed. This book is an international, multidisciplinary guide to hypermobility syndromes, and EDS in particular. It aims to create better awareness of hypermobility syndromes among health professionals, including medical specialists, and to be a guide to the management of such syndromes for patients and practitioners. It is intended for use in daily clinical practice rather than as a reference book for research or the latest developments, and has been written to be understandable for any healthcare worker or educated patient without compromise to the scientific content. The book is organized as follows: chapters on classifications and genetics are followed by chapters on individual types, organ (system) manifestations and complications, and finally ethics and therapeutic strategies, with an appendix on surgery and the precautions which should attend it. A special effort has been made to take account of the perspective of the patient; two of the editors have EDS. The book will be of interest to patients with hypermobility syndromes and their families, as well as to all those healthcare practitioners who may encounter such syndromes in the course of their work.
Download or read book Fetal and Neonatal Brain Injury written by David K. Stevenson and published by Cambridge University Press. This book was released on 2017-12-21 with total page 855 pages. Available in PDF, EPUB and Kindle. Book excerpt: Authoritative, practical clinical text giving clear management advice on diagnosis, treatment and outcomes of all fetal and neonatal brain injuries.
Download or read book Tolerable upper intake levels for vitamins and minerals written by European Commission. Scientific Committee on Food and published by . This book was released on 2006 with total page 478 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Neurology of AIDS written by Howard E. Gendelman, MD and published by Oxford University Press. This book was released on 2011-11-29 with total page 1156 pages. Available in PDF, EPUB and Kindle. Book excerpt: From basic science to clinical care, to epidemiological disease patters, The Neurology of AIDS is the only complete textbook available on AIDS neurology and the only one comprehensive enough to stand alone in each segment of study in brain disorders affected by the human immunodeficiency virus. It is an indispensable resource for students, resident physicians, practicing physicians, and for researchers and experts in the HIV/AIDS field. Oxford Clinical Neuroscience is a comprehensive, cross-searchable collection of resources offering quick and easy access to eleven of Oxford University Press's prestigious neuroscience texts. Joining Oxford Medicine Online these resources offer students, specialists and clinical researchers the best quality content in an easy-to-access format.
Download or read book Veterans and Agent Orange written by Committee to Review the Health Effects in Vietnam Veterans of Exposure to Herbicides and published by National Academies Press. This book was released on 1994-01-15 with total page 791 pages. Available in PDF, EPUB and Kindle. Book excerpt: Have U.S. military personnel experienced health problems from being exposed to Agent Orange, its dioxin contaminants, and other herbicides used in Vietnam? This definitive volume summarizes the strength of the evidence associating exposure during Vietnam service with cancer and other health effects and presents conclusions from an expert panel. Veterans and Agent Orange provides a historical review of the issue, examines studies of populations, in addition to Vietnam veterans, environmentally and occupationally exposed to herbicides and dioxin, and discusses problems in study methodology. The core of the book presents What is known about the toxicology of the herbicides used in greatest quantities in Vietnam. What is known about assessing exposure to herbicides and dioxin. What can be determined from the wide range of epidemiological studies conducted by different authorities. What is known about the relationship between exposure to herbicides and dioxin, and cancer, reproductive effects, neurobehavioral disorders, and other health effects. The book describes research areas of continuing concern and offers recommendations for further research on the health effects of Agent Orange exposure among Vietnam veterans. This volume will be critically important to both policymakers and physicians in the federal government, Vietnam veterans and their families, veterans organizations, researchers, and health professionals.
Download or read book Physiology of the CSF and Blood Brain Barriers written by Hugh Davson and published by CRC Press. This book was released on 1995-11-27 with total page 832 pages. Available in PDF, EPUB and Kindle. Book excerpt: This text/reference uses 574 figures and illustrations to help explain the relationships between blood and the cerebrospinal fluid (CSF) and central nervous system (CNS). The authors focus on the interaction of these fluids and the relative importance of the transport mechanisms of hormones from blood to nervous tissue. Carrier-mediated transport of many neuroactive peptides is discussed. Special aspects of the blood-brain barrier are covered in detail. An entire chapter is devoted to the comparative physiology of the CSF and the brain barriers. Physiologists in all fields will have an interest in the updated theories covered in this book.
Download or read book Magnesium in the Central Nervous System written by Robert Vink and published by University of Adelaide Press. This book was released on 2011 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt: The brain is the most complex organ in our body. Indeed, it is perhaps the most complex structure we have ever encountered in nature. Both structurally and functionally, there are many peculiarities that differentiate the brain from all other organs. The brain is our connection to the world around us and by governing nervous system and higher function, any disturbance induces severe neurological and psychiatric disorders that can have a devastating effect on quality of life. Our understanding of the physiology and biochemistry of the brain has improved dramatically in the last two decades. In particular, the critical role of cations, including magnesium, has become evident, even if incompletely understood at a mechanistic level. The exact role and regulation of magnesium, in particular, remains elusive, largely because intracellular levels are so difficult to routinely quantify. Nonetheless, the importance of magnesium to normal central nervous system activity is self-evident given the complicated homeostatic mechanisms that maintain the concentration of this cation within strict limits essential for normal physiology and metabolism. There is also considerable accumulating evidence to suggest alterations to some brain functions in both normal and pathological conditions may be linked to alterations in local magnesium concentration. This book, containing chapters written by some of the foremost experts in the field of magnesium research, brings together the latest in experimental and clinical magnesium research as it relates to the central nervous system. It offers a complete and updated view of magnesiums involvement in central nervous system function and in so doing, brings together two main pillars of contemporary neuroscience research, namely providing an explanation for the molecular mechanisms involved in brain function, and emphasizing the connections between the molecular changes and behavior. It is the untiring efforts of those magnesium researchers who have dedicated their lives to unraveling the mysteries of magnesiums role in biological systems that has inspired the collation of this volume of work.
Download or read book The Blood Cerebrospinal Fluid Barrier written by Wei Zheng and published by CRC Press. This book was released on 2005-03-30 with total page 668 pages. Available in PDF, EPUB and Kindle. Book excerpt: Despite the existence of two barrier systems in the brain, research over the last century has mostly focused on the blood-brain barrier rather than on the blood-CSF barrier. Today, there is a greater understanding of the function of the blood-CSF barrier and of the choroid plexus, a tissue that is the primary site of this barrier. With the growing number of studies that focus on the role of the blood-CSF barrier in CNS homeostasis and neurological disorders, a modern overview of the blood-CSF barrier is long overdue. The Blood-Cerebrospinal Fluid Barrier is exclusively devoted to the blood-CSF barrier. Internationally renowned experts discuss the most recent progress in the field of choroid plexus physiology and update our knowledge of the function of the blood-CSF barrier. The book begins with an overview of the development and morphology of the choroid plexus, and then covers various aspects of its function, such as the regulation of choroidal blood flow, ion transport, and the production and transport of polypeptides. Following an extensive section on the role of the choroid plexus in CNS disorders, the final section discusses in vitro, in vivo, and in situ models of the blood-CSF barrier. This unique book analyzes a wealth of new research on the proven and potential roles of the choroid plexus/blood-CSF barrier in the brain. It is a valuable resource that will foster future studies in neuroscience, pharmacology, and toxicology.
